Invention Grant
- Patent Title: Output impedance compensation for linear voltage regulators
- Patent Title (中): 线性稳压器的输出阻抗补偿
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Application No.: US11890930Application Date: 2007-08-08
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Publication No.: US07675272B2Publication Date: 2010-03-09
- Inventor: Ronald Andrew Michallick , Sean Michael Malolepszy , Rex Warren Pirkle
- Applicant: Ronald Andrew Michallick , Sean Michael Malolepszy , Rex Warren Pirkle
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incoporated
- Current Assignee: Texas Instruments Incoporated
- Current Assignee Address: US TX Dallas
- Agent William B. Kempler; Wade J. Brady III; Frederick J. Telecky, Jr.
- Main IPC: G05F1/40
- IPC: G05F1/40

Abstract:
In a method and system for regulating an output voltage, a linear voltage regulator (LVR) includes an adjustable shunt regulator (ASR) having a limited gain, a feedback circuit (FC), and a compensation resistor (CR). The limited gain causes the output voltage of the ASR to change in response to a change in an input current of the ASR. The FC generates a feedback voltage reference in proportion to the output voltage, the feedback voltage reference being provided to the ASR to control the output voltage. The CR is coupled to the ASR and the FC. The input current flows through the CR to provide a compensating voltage across the CR. The compensating voltage is provided to the feedback circuit to compensate the limited gain, thereby providing the output voltage that is substantially independent of the input current.
Public/Granted literature
- US20090039847A1 Output impedance compensation for linear voltage regulators Public/Granted day:2009-02-12
Information query
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